1) PLUSS is an Indian company that develops phase change materials (PCMs) for thermal energy storage.
2) It offers various types of PCMs, such as hydrated salts, organic PCMs, and microencapsulated PCMs, that can store large amounts of heat energy and release it at constant temperatures.
3) PLUSS has applied its PCM technologies to applications like cold storage, cold transportation, building energy efficiency, and HVAC to provide thermal energy regulation and reduce energy costs.
2. PLUSS® www.pluss.co.in
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About Pluss
Our strengths:
Indigenous “home grown” technologies
Cost effectiveness
Technology providers:
Thermal Energy Storage
Plastics Technology
We believe in
Consistent development
Pragmatic development
3. PLUSS® www.pluss.co.in
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About Pluss
The stakeholders
Tata Innovation fund
Private equity fund that has invested US$ 2.7 million.
Promoters
Founded by Mr. Devendra Jain and Mr. A.K. Mehta
Employees
A family of 50, and growing.
Customers
International
Domestic
5. PLUSS® www.pluss.co.in
Pluss PCM: The range
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Micro-
encapsulate
d PCM
Organic
PCMs
Form
stable
PCMs
Hydrate
d salts
Hydrated salts based
PCMs are available for the
entire gamut of functional
temperatures
Organic PCMs,
microcapsules and Form-
stable PCMs available in
the mid-temperature range
Wide temperature
range: -36 ⁰ C to 89 ⁰C
6. PLUSS® www.pluss.co.in
Innovations :
Suspension of nucleating agent – patents pending
Highly conductive HDPE– Overall heat transfer coefficient is
as high as metals
Packaging technology
Reinforced Form-stable PCM-patents applied
Our future targets
Application oriented PCM technology development
Form stable PCMs
Temperature extrema of Pluss PCMs
Pluss: Consistent Innovation
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7. PLUSS® www.pluss.co.in
Pluss PCM: We made it possible in India!
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Special Jury Recognition Award for New/Innovative Product Design
BryAir / ISHRAE / ASHRAE – February 2006 at ACREX, New Delhi.
9. PLUSS® www.pluss.co.in
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The Plasticon Award winner– Plastindia ‘09
PLUSS® - Winner of the “Innovative Infrastructure Product Award (Plastics
products in Building, Telecom, Healthcare, & Transportation)”
Pluss PCM: We made it possible in India!
11. PLUSS® www.pluss.co.in
Why
□ Prolongs the duration at which temperatures(cold/hot)
need to be maintained without external source.
□ Saves energy
□ Saves cost
□ Human comfort
□ A green concept – reduces pollution
□ Ability to shift peak power loads to off-peak hours (a
storage device)
□ As a back-up for temperature critical applications
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13. PLUSS® www.pluss.co.in
What
Materials that can store large amount of heat energy in
the form of latent heat
Release/absorption of heat at almost constant
temperature
Also called Passive cooling materials.
Heat Absorption / Release process repeatable over a
substantial number of cycles (~ 3000 or more)
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14. PLUSS® www.pluss.co.in
PCM Characteristics
□ Very high Latent Heat Capacity
□ Tailorable for specific
temperature requirements
□ Easy handling; can be filled in a
variety of encapsulations
□ Cheap & very stable over long
durations
□ Repeatable phase change
cycles
□ Low / No flammability
□ Non Toxic and Non
combustible
0
50
100
150
200
250
Stone Plastic Wood Water PCM
For T = 15 K
PCM’s Latent heat = 225 kJ / kg
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15. PLUSS® www.pluss.co.in
Latent Heat Storage: Components
□ PCM suitable for application temperature
□ Encapsulation of PCMs
□ A heat exchange surface for heat transfer between
PCM and heat source/sink
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27. PLUSS® www.pluss.co.in
Path Forward: Form Stable PCM
□ Form-stable PCM: An alternate approach
PCM infused in open-cell foams
Resolves stratification
Applicable to hydrated salts as well!
Commercial challenges
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28. PLUSS® www.pluss.co.in
Application development: Pluss R&D
Conventional method: PCM filled in pouches and
panels.
Suffers the dangers of leakage
Novel PCM material: solid even 10 ⁰C above transition
temperature.
Form-stable PCM
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Form stable PCM - A Substitute to
traditional PCM
29. PLUSS® www.pluss.co.in
PCM TES SYSTEM DESIGN
STORAGE ~20TRH /
cu meter
Uniform charging
and Discharging
Higher heat transfer
area for fluid
Lesser working fluid
requirement
PLATE
ENCAPSULATIONS
PCM
ENCAPSULTION
30. PLUSS® www.pluss.co.in
Ref: Heat and Cold Storage with PCM, Harald Mehling, Luisa F. Cabeza, Springer Publication,
Geometry and Accessible Volume for
Phase Change
31. PLUSS® www.pluss.co.in
PCM : Dark gray
Heat transfer fluid : Bright
gray
Ref: Heat and Cold Storage with PCM, Harald
Mehling, Luisa F. Cabeza, Springer Publication,
Geometry and PCM
32. PLUSS® www.pluss.co.in
The location of phase thickness S with time relates the heat flux (dQ/dt) to the
geometric dimensions.
The heat flux (dQ/dt) / power of cooling decreases from plane/rectangular
geometry to cylindrical geometry and to spherical geometry.
Ref: Heat and Cold Storage
with PCM, Harald Mehling,
Luisa F. Cabeza, Springer
Publication,
33. PLUSS® www.pluss.co.in
CONTROL ALGORITHM
5/23/2013
LOAD
FORECAST
SYSTEM
CHARACTERIS
TICS
POWER
TARIFF
• SEB TARIFF
• DG USAGE
• RENEWABLE
SOURCE
• TES TYPE
• PHYSICAL
CHARACTERISTIC
S
• STATISTICAL
DATA
• LOAD FACTORS
• WEATHER DATA
OPTIMIZATION
PROGRAM
OPTIMAL DAILY
OPERATING
STRATEGY
• Forecasts Day Ahead Load for the Building
• Minimizes Daily Operating Cost of HVAC
(c) Thermal Energy Service Solutions
Pvt. Ltd.
35. PLUSS® www.pluss.co.in
PLUSS TESSOL ADVANTAGE
5/23/2013
• More TRH / cu. m of
space (~20%)
HIGHER
ENERGY
DENSITY
• Lower approach temp
(3-4oC)
EFFICIENT
HEAT
EXCHANGER
• Proprietary Optimization
Algorithm
OPTIMIZED
OPERATING
STRATEGY
• -37 to +80C PCM
applications
WIDE TEMP
RANGE
Lower Area
Requirement
Lower
Energy
Consumptio
n
Multiple
Applications
CUSTOMER
BENEFIT
PRODUCT FEATURES
Out of the total energy consumption, Industry (Agriculture, Mining, Manufacturing and Construction) consumes 37%, Personal and Commercial Transportation 20%, Residential Heating, Lighting and Appliances 11%, and Commercial uses 5% (Lighting, heating and cooling of commercial buildings and provision of other services); 27% are energy losses in generation and transmission.
